Compiler/CC3200: CC3200 OTA Fails on a particular network

Peeyush Kumar79

Part Number: CC3200

Tool/software: TI C/C++ Compiler

Hi I am facing a stange problem.. the OTA works fine on every network expect university network ..We have deployed 100s of devices which are using cc3200 and SDK 1.3.0. The OTA is failing since yesterday only.

I have tried following :

1. Change cdn_url[512]; // it was already there

2. MAX_EAGAIN_RETRIES 10 changed to MAX_EAGAIN_RETRIES 30 ( no success )

I have looked deeper then found

sl_recv( ) returns error -11 inside funtion "CdnClient_ConnectByUrl"

one more thing if we try using our mobile hotspot then everything works fine and network socket id happens to be 86. Whereas on university network socked id is 85. I don't know why this is happening. Please help me out in this.

over 7 years ago

0 made4engineering over 7 years ago

TI__Mastermind 27605 points

HI Peeyush,

Try talking to your university network admin about the firewall.

-Aaron

0 Peeyush Kumar79 over 7 years ago in reply to made4engineering

Prodigy 80 points

thank you for reply.. however we have found that device is able to download upto 8KB file only over university network. any Idea what is happening ??

0 Peeyush Kumar79 over 7 years ago in reply to Peeyush Kumar79

Prodigy 80 points

We have resolved the issue..there was a security update and someone had changed the TCP packet setting in some of the APs. they have reverted the settings and everything working fine now. Thanks for your support.

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Compiler/CC3200: CC3200 OTA Fails on a particular network